Am i able to add wind slits to my banner? Wind slits are often included to banners to ensure strong winds can pass through without straining or blowing the banner away. We love to see your custom creations. Post a photo on social websites and incorporate @Vistaprint and #MadeWith VistaPrint https://medieval-banner-designs86037.laowaiblog.com/27191991/5-essential-elements-for-medieval-flags